5 united petals
Sprawling, study plant grows to 3 feet tall. Several stems grow from the base and are branched in the upper portion. Leaves are 1-2.5 inch long and 1 inch wide, alternate, undivided and unlobed. There is a prominent spine on the stem just above the leaf. Many flowers and buds grow in clusters at the ends of the stems.
Flowers are bright, blue or purplish, 1 inch across, funnel shaped opening in to 5 broad petal-like lobes. The conspicuous stamens extend beyond the petals.
Tend to form colonies at edges of lakes, ponds and streams.
Texas Wildflowers (Loughmiller) page 106
Southwestern and Texas Wildflowers (Peterson Field Guides) page 364
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